[Solved] Is there a way to resize to full page the node edit form?

Thanks a lot, but my need is to resize the edit form.
Btw I'm actually using jQuery / CSS in this way:

oneditprepare: function() {
            var winSize = $( window ).width() * 80 / 100; // set to 80%
            $('.editor-tray.ui-draggable').css({"width" : winSize +  "px"});
        }